		alert('是否开始测试你的设备？');
		var cx, cy;
		var glposition;
		var glright;
		var glforward;
		var glup;
		var glorigin;
		var glx;
		var gly;
		var gllen;
		var canvas;
		var gl;
		var date = new Date();
		var md = 0, mx, my;
		var t2, t1 = date.getTime();
		var mx = 0, my = 0, mx1 = 0, my1 = 0, lasttimen = 0;
		var ml = 0, mr = 0, mm = 0;
		var len = 1.6;
		var ang1 = 2.8;
		var ang2 = 0.4;
		var cenx = 0.0;
		var ceny = 0.0;
		var cenz = 0.0;
		var KERNEL = "float kernal(vec3 ver){\n" +
			"   vec3 a;\n" +
			"float b,c,d,e;\n" +
			"   a=ver;\n" +
			"   for(int i=0;i<5;i++){\n" +
			"       b=length(a);\n" +
			"       c=atan(a.y,a.x)*8.0;\n" +
			"       e=1.0/b;\n" +
			"       d=acos(a.z/b)*8.0;\n" +
			"       b=pow(b,8.0);\n" +
			"       a=vec3(b*sin(d)*cos(c),b*sin(d)*sin(c),b*cos(d))+ver;\n" +
			"       if(b>6.0){\n" +
			"           break;\n" +
			"       }\n" +
			"   }" +
			"   return 4.0-a.x*a.x-a.y*a.y-a.z*a.z;" +
			"}";
		var vertshade;
		var fragshader;
		var shaderProgram;
		function ontimer() {
			ang1 += 0.01;
			draw();
			window.requestAnimationFrame(ontimer);
		}
		document.addEventListener("mousedown",
			function (ev) {
				var oEvent = ev || event;
				if (oEvent.button == 0) {
					ml = 1;
					mm = 0;
				}
				if (oEvent.button == 2) {
					mr = 1;
					mm = 0;
				}
				mx = oEvent.clientX;
				my = oEvent.clientY;
			},
			false);
		document.addEventListener("mouseup",
			function (ev) {
				var oEvent = ev || event;
				if (oEvent.button == 0) {
					ml = 0;
				}
				if (oEvent.button == 2) {
					mr = 0;
				}
			},
			false);
		document.addEventListener("mousemove",
			function (ev) {
				var oEvent = ev || event;
				if (ml == 1) {
					ang1 += (oEvent.clientX - mx) * 0.002;
					ang2 += (oEvent.clientY - my) * 0.002;
					if (oEvent.clientX != mx || oEvent.clientY != my) {
						mm = 1;
					}
				}
				if (mr == 1) {
					var l = len * 4.0 / (cx + cy);
					cenx += l * (-(oEvent.clientX - mx) * Math.sin(ang1) - (oEvent.clientY - my) * Math.sin(ang2) * Math.cos(ang1));
					ceny += l * ((oEvent.clientY - my) * Math.cos(ang2));
					cenz += l * ((oEvent.clientX - mx) * Math.cos(ang1) - (oEvent.clientY - my) * Math.sin(ang2) * Math.sin(ang1));
					if (oEvent.clientX != mx || oEvent.clientY != my) {
						mm = 1;
					}
				}
				mx = oEvent.clientX;
				my = oEvent.clientY;
			},
			false);
		document.addEventListener("mousewheel",
			function (ev) {
				ev.preventDefault();
				var oEvent = ev || event;
				len *= Math.exp(-0.001 * oEvent.wheelDelta);
			},
			false);
		document.addEventListener("touchstart",
			function (ev) {
				var n = ev.touches.length;
				if (n == 1) {
					var oEvent = ev.touches[0];
					mx = oEvent.clientX;
					my = oEvent.clientY;
				}
				else if (n == 2) {
					var oEvent = ev.touches[0];
					mx = oEvent.clientX;
					my = oEvent.clientY;
					oEvent = ev.touches[1];
					mx1 = oEvent.clientX;
					my1 = oEvent.clientY;
				}
				lasttimen = n;
			},
			false);
		document.addEventListener("touchend",
			function (ev) {
				var n = ev.touches.length;
				if (n == 1) {
					var oEvent = ev.touches[0];
					mx = oEvent.clientX;
					my = oEvent.clientY;
				}
				else if (n == 2) {
					var oEvent = ev.touches[0];
					mx = oEvent.clientX;
					my = oEvent.clientY;
					oEvent = ev.touches[1];
					mx1 = oEvent.clientX;
					my1 = oEvent.clientY;
				}
				lasttimen = n;
			},
			false);
		document.addEventListener("touchmove",
			function (ev) {
				ev.preventDefault();
				var n = ev.touches.length;
				if (n == 1 && lasttimen == 1) {
					var oEvent = ev.touches[0];
					ang1 += (oEvent.clientX - mx) * 0.002;
					ang2 += (oEvent.clientY - my) * 0.002;
					mx = oEvent.clientX;
					my = oEvent.clientY;
				}
				else if (n == 2) {
					var oEvent = ev.touches[0];
					var oEvent1 = ev.touches[1];
					var l = len * 2.0 / (cx + cy), l1;
					cenx += l * (-(oEvent.clientX + oEvent1.clientX - mx - mx1) * Math.sin(ang1) - (oEvent.clientY + oEvent1.clientY - my - my1) * Math.sin(ang2) * Math.cos(ang1));
					ceny += l * ((oEvent.clientY + oEvent1.clientY - my - my1) * Math.cos(ang2));
					cenz += l * ((oEvent.clientX + oEvent1.clientX - mx - mx1) * Math.cos(ang1) - (oEvent.clientY + oEvent1.clientY - my - my1) * Math.sin(ang2) * Math.sin(ang1));
					l1 = Math.sqrt((mx - mx1) * (mx - mx1) + (my - my1) * (my - my1) + 1.0);
					mx = oEvent.clientX;
					my = oEvent.clientY;
					mx1 = oEvent1.clientX;
					my1 = oEvent1.clientY;
					l = Math.sqrt((mx - mx1) * (mx - mx1) + (my - my1) * (my - my1) + 1.0);
					len *= l1 / l;
				}
				lasttimen = n;
			},
			false);
		document.oncontextmenu = function (event) {
			if (mm == 1) {
				event.preventDefault();
			}
		};
		function draw() {
			date = new Date();
			var t2 = date.getTime();
			//ang1 += (t2 - t1)*0.001;
			t1 = t2;
			//ang1 += 0.1;
			gl.uniform1f(glx, cx * 2.0 / (cx + cy));
			gl.uniform1f(gly, cy * 2.0 / (cx + cy));
			gl.uniform1f(gllen, len);
			gl.uniform3f(glorigin, len * Math.cos(ang1) * Math.cos(ang2) + cenx, len * Math.sin(ang2) + ceny, len * Math.sin(ang1) * Math.cos(ang2) + cenz);
			gl.uniform3f(glright, Math.sin(ang1), 0, -Math.cos(ang1));
			gl.uniform3f(glup, -Math.sin(ang2) * Math.cos(ang1), Math.cos(ang2), -Math.sin(ang2) * Math.sin(ang1));
			gl.uniform3f(glforward, -Math.cos(ang1) * Math.cos(ang2), -Math.sin(ang2), -Math.sin(ang1) * Math.cos(ang2));
			gl.drawArrays(gl.TRIANGLES, 0, 6);
			gl.finish();
		}
		window.onresize = function () {
			cx = document.body.clientWidth;
			cy = document.body.clientHeight;
			if (cx > cy) {
				cx = cy;
			}
			else {
				cy = cx;
			}
			document.getElementById("main").style.width = 1024 + "px";
			document.getElementById("main").style.height = 1024 + "px";
			document.getElementById("main").style.transform = "scale(" + cx / 1024 + "," + cy / 1024 + ")";
		}
		window.onload = function () {
			cx = document.body.clientWidth;
			cy = document.body.clientHeight;
			if (cx > cy) {
				cx = cy;
			}
			else {
				cy = cx;
			}
			document.getElementById("main").style.width = 1024 + "px";
			document.getElementById("main").style.height = 1024 + "px";
			document.getElementById("main").style.transform = "scale(" + cx / 1024 + "," + cy / 1024 + ")";
			var positions = [-1.0, -1.0, 0.0, 1.0, -1.0, 0.0, 1.0, 1.0, 0.0, -1.0, -1.0, 0.0, 1.0, 1.0, 0.0, -1.0, 1.0, 0.0];
			var VSHADER_SOURCE =
				"#version 100 \n" +
				"precision highp float;\n" +
				"attribute vec4 position;" +
				"varying vec3 dir, localdir;" +
				"uniform vec3 right, forward, up, origin;" +
				"uniform float x,y;" +
				"void main() {" +
				"   gl_Position = position; " +
				"   dir = forward + right * position.x*x + up * position.y*y;" +
				"   localdir.x = position.x*x;" +
				"   localdir.y = position.y*y;" +
				"   localdir.z = -1.0;" +
				"} ";
			var FSHADER_SOURCE =
				"#version 100 \n" +
				"#define PI 3.14159265358979324\n" +
				"#define M_L 0.3819660113\n" +
				"#define M_R 0.6180339887\n" +
				"#define MAXR 8\n" +
				"#define SOLVER 8\n" +
				"precision highp float;\n" +
				"float kernal(vec3 ver)\n;" +
				"uniform vec3 right, forward, up, origin;\n" +
				"varying vec3 dir, localdir;\n" +
				"uniform float len;\n" +
				"vec3 ver;\n" +
				"int sign;" +
				"float v, v1, v2;\n" +
				"float r1, r2, r3, r4, m1, m2, m3, m4;\n" +
				"vec3 n, reflect;\n" +
				"const float step = 0.002;\n" +
				"vec3 color;\n" +
				"void main() {\n" +
				"   color.r=0.0;\n" +
				"   color.g=0.0;\n" +
				"   color.b=0.0;\n" +
				"   sign=0;" +
				"   v1 = kernal(origin + dir * (step*len));\n" +
				"   v2 = kernal(origin);\n" +
				"   for (int k = 2; k < 1002; k++) {\n" +
				"      ver = origin + dir * (step*len*float(k));\n" +
				"      v = kernal(ver);\n" +
				"      if (v > 0.0 && v1 < 0.0) {\n" +
				"         r1 = step * len*float(k - 1);\n" +
				"         r2 = step * len*float(k);\n" +
				"         m1 = kernal(origin + dir * r1);\n" +
				"         m2 = kernal(origin + dir * r2);\n" +
				"         for (int l = 0; l < SOLVER; l++) {\n" +
				"            r3 = r1 * 0.5 + r2 * 0.5;\n" +
				"            m3 = kernal(origin + dir * r3);\n" +
				"            if (m3 > 0.0) {\n" +
				"               r2 = r3;\n" +
				"               m2 = m3;\n" +
				"            }\n" +
				"            else {\n" +
				"               r1 = r3;\n" +
				"               m1 = m3;\n" +
				"            }\n" +
				"         }\n" +
				"         if (r3 < 2.0 * len) {\n" +
				"               sign=1;" +
				"            break;\n" +
				"         }\n" +
				"      }\n" +
				"      if (v < v1&&v1>v2&&v1 < 0.0 && (v1*2.0 > v || v1 * 2.0 > v2)) {\n" +
				"         r1 = step * len*float(k - 2);\n" +
				"         r2 = step * len*(float(k) - 2.0 + 2.0*M_L);\n" +
				"         r3 = step * len*(float(k) - 2.0 + 2.0*M_R);\n" +
				"         r4 = step * len*float(k);\n" +
				"         m2 = kernal(origin + dir * r2);\n" +
				"         m3 = kernal(origin + dir * r3);\n" +
				"         for (int l = 0; l < MAXR; l++) {\n" +
				"            if (m2 > m3) {\n" +
				"               r4 = r3;\n" +
				"               r3 = r2;\n" +
				"               r2 = r4 * M_L + r1 * M_R;\n" +
				"               m3 = m2;\n" +
				"               m2 = kernal(origin + dir * r2);\n" +
				"            }\n" +
				"            else {\n" +
				"               r1 = r2;\n" +
				"               r2 = r3;\n" +
				"               r3 = r4 * M_R + r1 * M_L;\n" +
				"               m2 = m3;\n" +
				"               m3 = kernal(origin + dir * r3);\n" +
				"            }\n" +
				"         }\n" +
				"         if (m2 > 0.0) {\n" +
				"            r1 = step * len*float(k - 2);\n" +
				"            r2 = r2;\n" +
				"            m1 = kernal(origin + dir * r1);\n" +
				"            m2 = kernal(origin + dir * r2);\n" +
				"            for (int l = 0; l < SOLVER; l++) {\n" +
				"               r3 = r1 * 0.5 + r2 * 0.5;\n" +
				"               m3 = kernal(origin + dir * r3);\n" +
				"               if (m3 > 0.0) {\n" +
				"                  r2 = r3;\n" +
				"                  m2 = m3;\n" +
				"               }\n" +
				"               else {\n" +
				"                  r1 = r3;\n" +
				"                  m1 = m3;\n" +
				"               }\n" +
				"            }\n" +
				"            if (r3 < 2.0 * len&&r3> step*len) {\n" +
				"                   sign=1;" +
				"               break;\n" +
				"            }\n" +
				"         }\n" +
				"         else if (m3 > 0.0) {\n" +
				"            r1 = step * len*float(k - 2);\n" +
				"            r2 = r3;\n" +
				"            m1 = kernal(origin + dir * r1);\n" +
				"            m2 = kernal(origin + dir * r2);\n" +
				"            for (int l = 0; l < SOLVER; l++) {\n" +
				"               r3 = r1 * 0.5 + r2 * 0.5;\n" +
				"               m3 = kernal(origin + dir * r3);\n" +
				"               if (m3 > 0.0) {\n" +
				"                  r2 = r3;\n" +
				"                  m2 = m3;\n" +
				"               }\n" +
				"               else {\n" +
				"                  r1 = r3;\n" +
				"                  m1 = m3;\n" +
				"               }\n" +
				"            }\n" +
				"            if (r3 < 2.0 * len&&r3> step*len) {\n" +
				"                   sign=1;" +
				"               break;\n" +
				"            }\n" +
				"         }\n" +
				"      }\n" +
				"      v2 = v1;\n" +
				"      v1 = v;\n" +
				"   }\n" +
				"   if (sign==1) {\n" +
				"      ver = origin + dir*r3 ;\n" +
				"       r1=ver.x*ver.x+ver.y*ver.y+ver.z*ver.z;" +
				"      n.x = kernal(ver - right * (r3*0.001)) - kernal(ver + right * (r3*0.001));\n" +
				"      n.y = kernal(ver - up * (r3*0.001)) - kernal(ver + up * (r3*0.001));\n" +
				"      n.z = kernal(ver + forward * (r3*0.001)) - kernal(ver - forward * (r3*0.001));\n" +
				"      r3 = n.x*n.x+n.y*n.y+n.z*n.z;\n" +
				"      n = n * (1.0 / sqrt(r3));\n" +
				"      ver = localdir;\n" +
				"      r3 = ver.x*ver.x+ver.y*ver.y+ver.z*ver.z;\n" +
				"      ver = ver * (1.0 / sqrt(r3));\n" +
				"      reflect = n * (-2.0*dot(ver, n)) + ver;\n" +
				"      r3 = reflect.x*0.276+reflect.y*0.920+reflect.z*0.276;\n" +
				"      r4 = n.x*0.276+n.y*0.920+n.z*0.276;\n" +
				"      r3 = max(0.0,r3);\n" +
				"      r3 = r3 * r3*r3*r3;\n" +
				"      r3 = r3 * 0.45 + r4 * 0.25 + 0.3;\n" +
				"      n.x = sin(r1*10.0)*0.5+0.5;\n" +
				"      n.y = sin(r1*10.0+2.05)*0.5+0.5;\n" +
				"      n.z = sin(r1*10.0-2.05)*0.5+0.5;\n" +
				"      color = n*r3;\n" +
				"   }\n" +
				"   gl_FragColor = vec4(color.x, color.y, color.z, 1.0);" +
				"}";
			canvas = document.getElementById('c1');
			gl = canvas.getContext('webgl');
			vertshader = gl.createShader(gl.VERTEX_SHADER);
			fragshader = gl.createShader(gl.FRAGMENT_SHADER);
			shaderProgram = gl.createProgram();
			gl.shaderSource(vertshader, VSHADER_SOURCE);
			gl.compileShader(vertshader);
			var infov = gl.getShaderInfoLog(vertshader);
			gl.shaderSource(fragshader, FSHADER_SOURCE + KERNEL);
			gl.compileShader(fragshader);
			var infof = gl.getShaderInfoLog(fragshader);
			gl.attachShader(shaderProgram, vertshader);
			gl.attachShader(shaderProgram, fragshader);
			gl.linkProgram(shaderProgram);
			gl.useProgram(shaderProgram);
			if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
				var info = gl.getProgramInfoLog(shaderProgram);
				throw 'Could not compile WebGL program. \n\n' + infov + infof + info;
			}
			glposition = gl.getAttribLocation(shaderProgram, 'position');
			glright = gl.getUniformLocation(shaderProgram, 'right');
			glforward = gl.getUniformLocation(shaderProgram, 'forward');
			glup = gl.getUniformLocation(shaderProgram, 'up');
			glorigin = gl.getUniformLocation(shaderProgram, 'origin');
			glx = gl.getUniformLocation(shaderProgram, 'x');
			gly = gl.getUniformLocation(shaderProgram, 'y');
			gllen = gl.getUniformLocation(shaderProgram, 'len');
			var buffer = gl.createBuffer();
			gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
			gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
			gl.vertexAttribPointer(glposition, 3, gl.FLOAT, false, 0, 0);
			gl.enableVertexAttribArray(glposition);

			gl.viewport(0, 0, 1024, 1024);
			draw();
			window.requestAnimationFrame(ontimer);
			document.getElementById("kernel").value = KERNEL;
			document.getElementById("btn").addEventListener("click", function () {
				var state = this.innerText == "CONFIG";
				this.innerText = state ? "HIDE" : "CONFIG";
				document.getElementById("config").style.display = state ? "inline" : "none";
			});
			document.getElementById("apply").addEventListener("click", function () {
				KERNEL = document.getElementById("kernel").value;
				gl.shaderSource(fragshader, FSHADER_SOURCE + KERNEL);
				gl.compileShader(fragshader);
				var infof = gl.getShaderInfoLog(fragshader);
				gl.linkProgram(shaderProgram);
				gl.useProgram(shaderProgram);
				if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
					var info = gl.getProgramInfoLog(shaderProgram);
					alert(infof + info);
				}
				glposition = gl.getAttribLocation(shaderProgram, 'position');
				glright = gl.getUniformLocation(shaderProgram, 'right');
				glforward = gl.getUniformLocation(shaderProgram, 'forward');
				glup = gl.getUniformLocation(shaderProgram, 'up');
				glorigin = gl.getUniformLocation(shaderProgram, 'origin');
				glx = gl.getUniformLocation(shaderProgram, 'x');
				gly = gl.getUniformLocation(shaderProgram, 'y');
				gllen = gl.getUniformLocation(shaderProgram, 'len');
			});
			document.getElementById("cancle").addEventListener("click", function () {
				document.getElementById("kernel").value = KERNEL;
			});
		}
		console.log("\n %c \u5c0f\u67ab\u7f51\u7edc %c \u0068\u0074\u0074\u0070\u0073\u003a\u002f\u002f\u0077\u0077\u0077\u002e\u0078\u0066\u0061\u0062\u0065\u002e\u0063\u006f\u006d\u002f \n\n","color: #fadfa3; background: #030307; padding:5px 0;","background: #fadfa3; padding:5px 0;");